Adjustable conveyer-roller.



E. H. zwaan. ADQIUSTABLE CONVEYER ROLLER. lAPPLICATION`FILED MAY 251 1915.

Patented Dec. 19,1916.

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E.- H. ZIEBER, ADJUSTABLE coNvEYER imma.

APPLICAT|0. FILED HIM/26,1925.

@muted De@ 19,1916.

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sraras Parana? ernten@ mwean n. ZIEBER, oF PHILADELPHIA, PENNSYLVANIA, AssIGNon To WILLIAM T. HUMMER, or anmiroan, PENNSYLVANIA.

` ADJUSTABLE CONVEYER-ROLLEB.

' specification of Letters Patent.

Patented Dec. 19, 1916.

Application tiled. May 26, 1915. SerialvNo. 30,651.

To all 'whom z't may concern:

Be it known that I, EowAn'D H. Zmnn, a -citizen of the United States of America, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania,

have invented certain new and useful Im- 2V h parts .rendering the structure whereby each unit may beincreased or decreased m size with a minimum amount of roller suppositioned,

constructed and arranged, both individually permit free parts and prevent binding and stoppage of the rollers under all work- .ing conditions, thereby greatly increasing the life of the apparatus and' belt.

Other objects, will be in part obvious from 1n connection therewith by th analysis of this invention. 40 his invention accordingly consists in theV features of construction, combination of parts and in the unique relations of the members and in the relative proportioning and disposition thereof, all as more completely outlined herein.

o enable others skilled in the art so fully to .comprehend the underlying features theeof that they may embody the same by e lnumerous modifications in structure and relation contemplatedI by this invention, a preferred form have been annexed as a part of this disclosure, and in such drawings, like characters of reference denote corresponding parts through- 55 ll the views,- in whI igure A1 1s an elevational view of one e following the annexed drawings and in part indicated f unit with the belt in section showing the As is well known to those familiar with the art, belt conveyers comprise a belt of any desired length traveling over a series of substantially horizontallyA disposed rollers,

material along the central lines of the belt. At one end of the conveyer there is a driving pullleley for moving the belt and to t belt in any desired feed or the like and and where desired.

eferring now to the drawings in detail and particularly Fig. 1, 10 denotes a framework of wood, or metalas shown in Fig. 5,

on the upper side of the f vey the material and after passing over an end driving pulley (not shown) returns on the under rollers 17 to theopposite ndlof 11G t e conveyerl In Figs. 3 and 4. there is fshown in vdetail l one'of the troughing rollers 13 and its sup- -`cup 32. It is to be noted that 'a slightv L parting' bracket. This bracket comprises a shoulder 33 is formed between the swinging vbase .jember 19 provided with holes 20 arm 26 and the spindle 30 against which the through which fastening bolts are adapted hub 34 of the troughing roller'l3 is ada ted to pass to .secure the base to the transverse to rest. The grease cup 32 at the end o the 7g stringer or member 1l. At one side is spindle 30 engages the oppom'te end of thev a relatively heavy upwardly projecting hub and prevents accidental removal of the. flanged web 21 provided with a central roller, the parts being held in place by set transverse pivot hole 22 for the bolt 14. nut 35. One or more perforations 36 are Near the lower part of this flanged web 21 provided in the center and lower end of the 75 areI a series of V-shaped teeth 23 and stop spindle through which the grease is orced lugs 24 and 25. The supporting spindle and to eiliciently lubricate the bearing as a' swinging arm 26 shown at the right of Fig. threaded cap 37 is screwed down. In this 4 is provided with a corresponding transmanner, the grease always works from the verse opening 27 through which the pivot center toward the outer edges of the hub 'S0 pin or bolt 14 shown in Fig. 3 is adapted to and prevents any dust o'r dirt from entering pass to'engagethe opening or hole 22. At the bearing. l the lower part of the arm or member 26V The troughing roller 13 is provided with thereis provided a second series of V-shaped a reinforcing bead 38, thus making it im- 20. teeth 28 andra stop lug 29. It is to be underpossible for the rim to wear away by the 35 stogod that the parts are placed adjacent to swaying of the belt, and leave a sharp edge each other iii such a manner as to have the to cut the belt. This bead also greatly two sets of teeth 23 and 28 coact when the strengthens the outer and exposed portion clamping pivot bolt 14 is tightened. The ,of the troughing roller and -rendersit lugs 24, 25 and 29 will limit the angular capable of withstanding impact from accie: .movement of the roller 13 in both directions dental sources.. These pulleys .which are apwithin proper degrees. A j proxiinately six inches in diameter have The teeth 23 and 28 are large and strong their faces machined absolutely-true with because-of their being ,positioned relatively respect to the bore of the hub 34 and when remote with respect to the pivot point 14 mountedin series on the same shaft make a 9.3 whereby a wide tooth is obtained with a true smooth running roller which will not variation of approximately five degrees for Wear thesurface of the belt or. cause the each tooth. Thus, the supporting member belt to vibrate to any material extent. A. 26 may be positioned'at either 10,150 or plurality of webs 39 are provided between 20 `from the hirzonta This method of the hub 34 andthe periphery ofthe roller, im adjustment by means of the teeth on the as may be necessary to give the pulley suiiibracket and swinging arm has material adcient strength without necessarily increas,I vantages over a set screw or clamp nut in ing its weightand cost oi manufacture. ythat adjustment can be obtained in steps The adjustable troughing rollers are so 40 one tooth at a time and all of thepulleys orz mounted with respect to the horizontal 1:5 the series may be positively positioned atl rollers 12 as to overlap the outer edges ot exactly the saine'angle, a condition which is the. end rollers as clearly shown in Fig. i. highly desirable in order to make the belt This feature together with the fact that the um true, inside or lower edge of the troughing roller It may be noted that a, belt should be is considerably below the top line of the 113 troughed only as much as necessary to keep center rollers 12 eliminates the possibility oi: material from spilling and experience has the belt coming in contact with the adjacent shown that the maximum angle at whicha edges o either of the rollers at the point belt may be troughed without cracking in .where it bends, thus materially increasing the direction of-its length is approximately the life of the belt, as the sharp edges oi' ii 20. There is very little to e' gained in the pulleys cause the belt to wear more capacity by using a steeper angle, for 20 is rapidly than the smooth surfaces of the amply suilicient to accomplish the `desired rollers. results and without premature destruction. Shaft 40 carrying the horizontal roll- These troughing rollers 13 are preferably ings at each end. These bearings whic lubricated by means of compression grease are in theyform of: trunnions 4l near the'` cups which are more desirable than ball upper part of brackets/42 secured to the bearings for use in dusty places where belt transverse Stringer member 11, are free to conveyers are so frequently employed. This adjust themselves automaticallyto accoinii.;

form oilubrication is shown in Fig. 3 in -modate the rollers to any warping or iinwhich the swinging arm 26 is provided with evenness of the stringers, hence the possia separate hollow spindle 30 held in place bility ofn the shaft binding in the bearings by a set screw-31 engagedat its opposite and ceasing to revolve is eliminated. This 65 end by a slightly protruding threaded grease feature is very advantageous for a lbelt iso of the belt, by causing longitudinalcracks. ers 12,. is mounted in selfadjusting bear iii that thehighest tions without is worn very rapidly by slipping over rollers which do not turn freely as their rims are soon worn away, presenting holes whose knife-like edges cut the belt.

Experiments have conclusively proven is attained by ing a relatively large portion of the belt width troughing taking place near the edges. B this construction the strains in the belt due to bending are located near the edges of the belt where the abrasive action of the carried material is less. Furthermore, the wide flat rollers steady the belt and greatly reduce its tendency to sway and run unevenly.

As shown clearly in Fig. 2, it will be noted that the elements forming each supporting unit are separate, that is the troughing rollers 13 are mounted on vindependent bracketsat one side of the horizontal rollers thereby permitting a replacing or to or decreased should a change in widthV of belt be desired by merely varying the length of the supporting shaft.

It is believed to be unnecessary to go into detail statement of the operation of this device in view of the above description of this construction and its characteristics.

T he device is simple, practical and highly and mounting the various rollers permitting automatic adjustment and thereby the life of the rollers and belt is materially lengthened. In short the invention is believed to accomplish, among others, all of the objects and advantages above set forth.

Without further analysis, the foregoing will so fully reveal the gist of this invention that others can by applying current knowledge readily adapt it` for various applicaomitting certain features that, from the standpoint of the prior art, fairly constitute essential characteristics of the generic or specific aspects of this invention, and therefore such adaptation should and is intended to be comprehended within 'the meaning and range following claims.

I claim: f

1. In a device of the character described, in combination, a horizontal roller, separate and independent troughing rollers at each side thereof materially overlapping ,said

justment of said of equivalency of the ture in presence of twoywitnesses.

first mentioned roller, and means for ad justing said troughing rollers comprising a support, and a swinging arm on said support, said last mentioned parts havingp acting means whereby the rollers of several sets are insured a uniform adjustment.

In a device of the character described, in combination, a horizontal roller, separate and independent troughing rollers at each side thereof materially overlapping said first mentioned roller, and means lfor adjusting said troughing rollers comprising aI support, and a swinging arm on said support, coacting means on said support and arm adapted to be clamped into intermeshing relation and insure uniform adjustment and means for limiting the movement of said swinging support.

3. In a device of the character described, in combination,

a troughing roller having arm with respect to 'its I central -supporting webs, reinforcing means at its upper edge being materially thicker in thev direction of the axis of the roller, an a support about which the roller is adapted to turn.

4. In a device of the character described,

respect to the horizontal and a relatively thick and long reinforcing bead on the upper inner edge of said roller adapted to prevent wear to a sharp edge by a belt traveling thereon should said roller b e prevented from turning upon its support.

5. lIn a device of the character described, in combination, troughin rollers, independent fixed supports there or, each having a pluralit of lugs, swinging arms pivotally mounte on said supports and carrying coacting lugs positioned relatively remote from the pivot points adapted to engage said first mentioned lugs to prevent the adtroughing rollers beyond predetermined limits, and on said support to insure uniform adjustment. v

6. In a device of the character described, in combination, a' supporting bracket, an arm carried thereby, a roller mounted upon said arm and intermeshing means on said bracket and arm permitting the angle of inclination to be justed position. In testimony whereof I aix my signa.

EDWARD H. ZIEBER. Witnesses: Dnvm MCBURNEY, H. M. MCBURNEY.

coacting means and swinging arms adapted' varied and held in ad 

